Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
P&A
Definition(s)
P&A
Plug and abandon. Source: API Bulletin 97, Well Construction Interface Document Guidelines, First Edition, December 2013. Global Standards Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global StandardsP&ID
Definition(s)
P&ID
Piping and instrumentation diagram. Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards Source: ISO 17776:2016, Petroleum and natural gas industries — Offshore production installations — Major accident hazard management during the design of new installations, Second Edition, December 2016. Global Standards Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards Source: Oil & Gas UK, Guidelines on subsea BOP systems, Issue 1, July 2012, Global StandardsP&ID
Process and Instrument Diagram. Source: API RP 14G, Recommended Practice for Fire Prevention and Control on Fixed Open-type Offshore Production Platforms: Upstream Segment, Fourth Edition, April 2007. Global StandardsP-5 Operator Number
Definition(s)
P-5 Operator Number
The number assigned by the commission to each person who conducts any of the activities specified in §3.1 of this title (relating to Organization Report; Retention of Records; Notice Requirements) within the State of Texas. Source: Oil and Gas Division, Texas Administrative Code, Title 16, Chapter 3, February 2013. RegulationsP-tank
Definition(s)
P-tank
Powder tank module. Source: ISO 18647:2017, Petroleum and natural gas industries — Modular drilling rigs for offshore fixed platforms, First Edition, August 2017. Global StandardsP-tank
Modularized facilities that include bentonite tank, barite tank, cement tank, weighing equipment, control equipment, and manifold system, used to store powder materials for drilling fluid and cement slurry preparation. Source: ISO 18647:2017, Petroleum and natural gas industries — Modular drilling rigs for offshore fixed platforms, First Edition, August 2017. Global StandardsPA
Definition(s)
PA
Public Address. Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global Standards Source: International Association of Drilling Contractors, Appendix 2 to Health, Safety and Environment Case Guidelines for Offshore Drilling Contractors, Issue 3.3.2, February 2010. IADC Guidelines Source: ISO 13702:2015, Petroleum and natural gas industries — Control and mitigation of fires and explosions on offshore production installations — Requirements and guidelines, Second Edition, August 2015. Global StandardsPA
Polyamide. Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global StandardsPack Off or Stripper Preventer
Definition(s)
Pack Off or Stripper Preventer
Preventer having an element or packing material that relies on pressure from the wellbore for closure. Used primarily to strip pipe through the hole or allow pipe movement with pressure on the annulus. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPack-Off
Definition(s)
Pack-Off (or Stripper)
A device with an elastomer packing element that depends on pressure below the packing to effect a seal in the annulus. Used primarily to run or pull pipe under low or moderate pressures. This device is not dependable for service under high differential pressures. Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global StandardsPack-Off Or Stripper
Definition(s)
Pack-Off Or Stripper
A device with a rubber/elastomer packing element that depends on pressure below the packing to effect a seal in the annulus. Used primarily to run or pull pipe under low or moderate pressures. This device is not dependable for service under high differential pressures. Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global StandardsPack-Off Or Stripper
Device with elastomer packing element that depends on pressure below the packing to create a seal in the annulus. Used primarily to run or pull pipe at low or moderate pressure. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPackaged Form
Definition(s)
Packaged Form
Packaged form means the form of containment specified in the IMDG Code. <Chapter VII, part A, regulation 1>. Source: IMO Resolution MSC.123(75), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 24 May 2002, International Maritime Organization. LegislationPacker
Definition(s)
Packer
Mechanical device with a packing element (3.27), not installed in a designed receptacle, used for blocking fluid (liquid or gas) communication through the annular space between conduits by sealing off the space between them. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsPacker Element Sealing System
Definition(s)
Packer Element Sealing System
Components consisting of elastomeric elements and anti-extrusion devices comprising a sealing system.
Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global StandardsPacking Element
Definition(s)
Packing Element
The annular sealing device in an annular BOP or diverter. Also, the elastomer packing element used in valves or lubricators to effect a seal. Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global StandardsPacking Element
Seal on a packer (3.26) or bridge plug (3.2) that blocks fluid communication by sealing on the ID of the conduit. Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global StandardsPacking Element
Sealing element between the rotating control device and the drill string. Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global StandardsPaging
Definition(s)
Paging
A computer display method of conveying or mapping between displays or screens to allow increased information or control utilizing multiple screens, but not displayed simultaneously. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global StandardsPanelboard
Definition(s)
Panelboard
A single panel or group of panel units designed for assembly in the form of a single panel; including buses, automatic overcurrent devices, and equipped with or without switches for the control of light, heat, or power circuits; designed to be placed in a cabinet or cutout box placed in or against a wall or partition and accessible only from the front. Source: API Recommended Practice 14FZ, Recommended Practice for Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class I, Zone 0, Zone 1, and Zone 2 Locations, Second Edition, May 2013. Global Standards Source: API RP 14F, Design, Installation, and Maintenance of Electrical Systems for Fixed and Floating Offshore Petroleum Facilities for Unclassified and Class 1, Division 1 and Division 2 Locations, Fifth Edition, July 2008. Global StandardsPanhandle Formula
Definition(s)
Panhandle Formula
Empirical equation used for calculating flow in gas pipelines; two versions are Panhandle "A" (partially turbulent) and "B", sometimes- called Modified, (fully turbulent).. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPAP
Definition(s)
PAP
Production-assurance programme. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global StandardsPAPR
Definition(s)
PAPR
powered air-purifying respirator. Source: API RP 98, Personal Protective Equipment Selection for Oil Spill Responders, First Edition, August 2013. Global StandardsParallel Operation
Definition(s)
Parallel Operation
Configuration where pump or compressor capacities are additive while the head remains constant. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsParameter or Test Standard
Definition(s)
Parameter or Test Standard
Parameter or Test Standard Thickness (average) > 10 mil (0.01 in) Breaking Strength (Grab Method)* 90 lbs Bursting Strength* 140 psi Tearing Strength* 25 lbs Seam Strength* 50 lbs *Testing is to be performed according to ASTM method D-751, latest revision. Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. RegulationsParasite (string, casing)
Definition(s)
Parasite (string, casing)
Annulus or ID used to inject fluid at some depth below surface. The use is very similar to a gas lift mandrel. Source: IADC UBO / MPD Glossary, December 2011. Global StandardsPart
Definition(s)
Part
Individual piece used in the assembly of single equipment units.- EXAMPLES Body, bonnet, gate, stud, handwheel, etc., are parts of a valve. A part may also be a piece not in finished form.
Part
Individual piece used in the assembly of a single unit of equipment. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global StandardsPart
An individual piece used in the assembly of a single equipment unit. Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global StandardsPart Factor
Definition(s)
Part Factor , f3,est
Derating factor that de-rates a component, taking account of non-pressure-related axial loads, e.g. bending and externally-applied direct-acting axial forces so that the combined hoop and axial stresses are still within the design envelope for each individual load case.- Note: 1 to entry: f3,est is estimated at the bid stage. The f3,est part factor cannot be confirmed until a stress analysis is conducted. The f3,est part factor can vary from one load case to another.